Energy-saving control method for elevator light curtain and low-power wireless communication light curtain

Abstract

This invention discloses an energy-saving control method for elevator light curtains and a low-power wireless communication light curtain, relating to the field of elevator control technology. The energy-saving control method for elevator light curtains includes: Step 1, establishing an energy-saving control environment, which includes: a camera, a light-sensing module, a controller, and a central control center. The central control center is used to regulate the operating status of each elevator. Step 2, establishing control logic, which includes: the central control center being configured to: if the current time is within a preset low-traffic period, acquire video data fed back by the camera; identify and analyze the number of people, their positions, and the items they are carrying in the elevator based on the video data; adjust the light curtain monitoring range based on the identification results; and output a light curtain adjustment control command to the corresponding controller. The controller is configured to: if it receives a light curtain adjustment control command, control the opening and closing of the corresponding number of transmitters; acquire monitoring signals fed back by the receiver; and control the elevator control system response based on the monitoring signals. This application has the effect of reducing energy consumption.

Description

Technical Field

[0001] This application relates to the field of elevator control technology, and in particular to an energy-saving control method for elevator light curtains and a low-power wireless communication light curtain. Background Technology

[0002] In order to facilitate residents' travel, elevators are installed in tall buildings. Elevators quickly transport residents to the floor they need by vertically moving the car up and down, which is not only convenient but also highly efficient.

[0003] Elevator efficiency is affected not only by the speed of ascent and descent but also by the opening and closing of the car doors. If the waiting time for the doors to close is too long, the dwell time on each floor will be extended. For residents with many floors, the waiting time will be very long. Therefore, the waiting time for elevator doors to close is usually not very long, between a few seconds and a dozen seconds.

[0004] However, if elevator doors were to close solely based on time rules, safety accidents could occur because there are always users who might try to enter the elevator while the doors are closing. Therefore, existing elevators also have light curtains, or light sensing systems, installed on the doors to detect whether an object is between the two closing doors and determine whether to continue closing.

[0005] To reduce blind spots in the sensing between doors, elevators typically use more than just a few sensing lines; instead, they have a dense network of sensing lines running from top to bottom between two doors. This allows for more comprehensive sensing of people and objects, ensuring safe elevator operation. However, this method currently has the following shortcomings:

[0006] The sensor lines that are densely packed between two doors usually remain open even during periods of low foot traffic, which greatly increases energy consumption. Therefore, this application proposes a new technical solution. Summary of the Invention

[0007] To save energy, this application provides an energy-saving control method for elevator light curtains and a low-power wireless communication light curtain.

[0008] In a first aspect, this application provides an energy-saving control method for elevator light curtains, employing the following technical solution:

[0009] An energy-saving control method for elevator light curtains includes:

[0010] Step 1: Establish an energy-saving control environment, which includes:

[0011] The camera's coverage area extends inside the elevator.

[0012] The light sensor module includes multiple transmitters and receivers, which are installed on both sides of the elevator door to detect whether there are obstacles in the elevator door area.

[0013] The controller is electrically connected to the elevator control system and the light sensor module. It is used to control the monitoring range of the light sensor module, receive the signals fed back by the light sensor module and respond to the elevator control system. It is used to control the elevator door to remain open or reopen.

[0014] The central control center is wirelessly connected to the controllers of each elevator and the cameras inside each elevator, and is used to regulate the operating status of each elevator.

[0015] Step 2: Establish the control logic, which includes:

[0016] The central control center is configured as follows:

[0017] Get the current time;

[0018] If the current time falls within a preset low-traffic period, then acquire video data from the camera.

[0019] Based on video data, the system identifies and analyzes the number of people, their positions, and the items they are carrying inside the elevator. It then adjusts the monitoring range of the light curtain based on the identification results and sends light curtain adjustment control commands to the corresponding controller.

[0020] The controller is configured as follows:

[0021] If a light curtain adjustment control command is received, the corresponding number of transmitters will be turned on or off.

[0022] The system acquires the monitoring signals fed back from the receiving end and controls the elevator control system to respond based on the monitoring signals.

[0023] Optionally, the step of identifying and analyzing the number of people, their positions, and the items they are carrying in the elevator based on video data, and adjusting the monitoring range of the light curtain based on the identification results, includes:

[0024] The number of people in the elevator is identified in the video data, and it is determined whether the number of people meets the preset low flow rate. If so, the first condition for reducing the light curtain range is met.

[0025] The positions of people inside the elevator in the video data are identified, and it is determined whether the positions of people conform to the preset area away from the elevator door. If so, the second condition for reducing the range of the light curtain is met.

[0026] The volume of items carried by people in the elevator in the video data is identified, and it is determined whether the volume of the items meets the preset small volume items. If so, the third condition for reducing the range of the light curtain is met.

[0027] If any one of the above conditions for reducing the light curtain range (condition 1, condition 2, or condition 3) is met, the light curtain monitoring range will be adjusted based on the preset rule for reducing the number of light curtain groups.

[0028] Optionally, the establishment control logic includes:

[0029] The central control center is configured as follows:

[0030] If any controller feedback is received indicating that the elevator door is not closed properly, the video data from the corresponding elevator camera is retrieved, and the actual opening and closing status of the elevator door in the video data is identified and analyzed.

[0031] If the analysis result indicates that the elevator door is blocked and closed, then the timer will start from the moment the analysis result is generated and the duration of obstruction will be accumulated.

[0032] If the duration of obstruction exceeds the preset temporary obstruction duration, a switching contact sensing process control command is sent to the controller.

[0033] The controller is configured as follows:

[0034] If a control command to switch to contact-type sensing is received from the central control center, the system will power on the contact modules pre-installed on both sides of the elevator door, and control the elevator control system to respond and control the opening and closing of the light sensor module based on the detection signals fed back by the contact modules.

[0035] Optionally, the step of controlling the elevator control system to respond and control the opening and closing of the light sensor module based on the detection signal fed back by the contact module includes:

[0036] If the detection signal fed back by the contact module indicates that there is contact, the light sensor module is turned off, and the elevator control system is instructed to keep the elevator door open or reopen it.

[0037] If the detection signal fed back by the contact module indicates that there is no contact, then the photosensitive module is turned on.

[0038] If the signal from the light sensor module indicates that there is an obstruction, the elevator control system will control the elevator door to remain open or reopen.

[0039] If the signal from the light sensor module indicates that there is no obstruction, the elevator control system will close the elevator door.

[0040] Optionally, the controller is further configured to:

[0041] Define the time when the elevator door is about to close as s1 and the time when the elevator door is completely closed as s2; where s1 and s2 increase sequentially in time.

[0042] If the current time is s1, then control the light sensor module to turn on;

[0043] If the current time is s2, then the light sensor module is turned off.

[0044] Optionally, the central control center is configured as follows:

[0045] If a user triggers a pre-set call for up / down on a certain floor, the system obtains the operating status of each elevator and the floor selection command triggered by the user inside the car; wherein, the operating status includes position, direction and load;

[0046] Based on the operating status of each elevator, floor selection instructions, and up / down requests, the system analyzes and selects a matching path according to a preset priority principle, and controls the corresponding elevator to respond based on the analysis results.

[0047] Secondly, this application provides a low-power wireless communication light curtain, which adopts the following technical solution:

[0048] A low-power wireless communication light curtain includes a light sensing module, a wireless communication module, and a controller. The light sensing module is electrically connected to the controller, and the controller is data-connected to the wireless communication module. The controller is electrically connected to a preset elevator control system, and the controller is data-connected to a preset central control center for controlling the operation of multiple elevators. The central control center is data-connected to a preset camera inside the elevator. The light sensing module includes multiple arrays arranged at the transmitting and receiving ends of the elevator door.

[0049] The central control center is configured as follows:

[0050] Get the current time;

[0051] If the current time falls within a preset low-traffic period, then acquire video data from the camera.

[0052] Based on video data, the system identifies and analyzes the number of people, their positions, and the items they are carrying inside the elevator. It then adjusts the monitoring range of the light curtain based on the identification results and sends light curtain adjustment control commands to the corresponding controller.

[0053] The controller is configured to: if a light curtain adjustment control command is received, control the opening and closing of the corresponding number of transmitters; acquire the monitoring signal fed back by the receiver, and control the elevator control system to respond according to the monitoring signal.

[0054] Optionally, the controller is electrically connected to a contact module, which is installed on both sides of the elevator door. The contact module includes a contact plate, a guide rod, and a contact sensing module. One side of the contact plate has a spring that extends into a pre-drilled groove on the side of the elevator door and is fixedly connected thereto. The end of the spring abuts against the inner wall of the groove. The other side of the contact plate extends out of the groove. One end of the guide rod is fixedly connected to the inner wall of the groove, and the other end slides through the extension part of the contact plate. The contact sensing module includes a movable contact, a fixed contact, and a control circuit. The control circuit is electrically connected to the fixed contact and the controller. The movable contact is located on the contact plate, and the fixed contact is fixedly connected to the door edge of the elevator door where it can contact or separate from the contact plate.

[0055] Optionally, the elevator door is provided with an upwardly inclined guide surface at the bottom of the groove, and the lower end of the contact plate is provided with an inclined surface that cooperates with the guide surface.

[0056] In summary, this application includes the following beneficial technical effects: During low-traffic periods, by analyzing the number of people in the elevator, the positions of people in the elevator, and whether the items carried by people obstruct people from entering the elevator, the number of light curtains opened can be adaptively reduced or increased based on the analysis results. This eliminates the need to keep all light curtains in a constantly open state for extended periods, thereby reducing energy consumption and achieving energy-saving control. Attached Figure Description

[0057] Figure 1 This is a flowchart of the method in this application.

[0058] Figure 2 This is a schematic diagram of the elevator door structure on one side of one of the embodiments of this application.

[0059] Figure 3 This is a cross-sectional view of the contact plate in an embodiment of this application.

[0060] Figure 4 yes Figure 3 A magnified view of part A in the diagram.

[0061] Explanation of reference numerals in the attached diagram: 1. Light sensing module; 2. Contact module; 21. Contact plate; 22. Guide rod; 23. Spring; 24. Guide hole; 3. Groove; 4. Door edge; 51. Movable contact; 52. Fixed contact; 31. Guide surface. Detailed Implementation

[0062] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0063] This application discloses an energy-saving control method for elevator light curtains.

[0064] Reference Figure 1 Energy-saving control methods for elevator light curtains include:

[0065] Step 1: Establish an energy-saving control environment, which includes: cameras, light sensor modules, controllers, and a central control center. The camera's acquisition range covers the inside of the elevator. The light sensor module includes multiple transmitters and receivers, which are embedded on both sides of the elevator door to detect obstacles in the elevator door area. The controller is electrically connected to the elevator control system and the light sensor module to control the monitoring range of the light sensor module, receive signals from the light sensor module, and respond to the elevator control system to control whether the elevator door remains open or reopens. The central control center is wirelessly connected to the controllers of each elevator and the cameras inside each elevator to view the situation inside each elevator and to regulate the operation status of each elevator.

[0066] Step 2: Establish the control logic, which includes:

[0067] The central control center is configured as follows:

[0068] Get the current time;

[0069] If the current time is within a preset low traffic period, such as between 1 a.m. and 5 a.m., then obtain video data from the camera.

[0070] The video data is processed (e.g., decoding, segmentation, and extraction of frame images) to identify and analyze the number of people, their positions, and the items they are carrying inside the elevator. Based on the identification results, the monitoring range of the light curtain is adjusted, for example, by reducing the number of transmitters that are opened, and light curtain adjustment control commands are output to the corresponding controller.

[0071] Example: At 2 a.m., when there is no one in the elevator, the monitoring range of the light curtain can be reduced, that is, the number of transmitters turned on can be reduced, thereby reducing energy consumption.

[0072] It is understandable that image recognition is an existing technology, and the corresponding samples can be imported into the model for training, so it will not be elaborated further; the specific method of adjusting the light curtain monitoring range according to the recognition results will be described below.

[0073] The controller is configured as follows:

[0074] If a light curtain adjustment control command is received, the corresponding number of transmitters will be turned on or off.

[0075] The system acquires the monitoring signals fed back from the receiving end and controls the elevator control system to respond based on the monitoring signals.

[0076] Understandably, when the receiving end detects an obstruction, it sends a monitoring signal to the controller, which then sends a signal to the elevator control system to control whether the elevator door remains open or reopens.

[0077] With the above settings, during low-traffic periods, the number of light curtains opened can be reduced adaptively based on the number of people in the elevator, whether people are standing near the elevator door, and the items they are carrying. This eliminates the need for all light curtains to remain open for extended periods, thereby reducing energy consumption and achieving energy-saving control.

[0078] Regarding the identification and analysis of the number of people, their positions, and items carried in the elevator based on video data, and the adjustment of the light curtain monitoring range based on the identification results, the specific methods are as follows:

[0079] 1) Identify the number of people in the elevator from the video data and determine whether the number of people meets the preset low flow rate. If so, the first condition for reducing the light curtain range is met.

[0080] Example: If there are fewer than 2 people in the elevator, it meets the criteria for low passenger flow.

[0081] 2) Identify the positions of people inside the elevator in the video data and determine whether the positions of people conform to the preset area away from the elevator door. If so, the second condition for reducing the range of the light curtain is met.

[0082] Example: Divide the interior space of the elevator into two equal parts, one part close to the elevator door and the other part far away from the elevator door. If people in the elevator are standing far away from the elevator door, then they fall into the area far away from the elevator door.

[0083] 3) Identify the volume of items carried by people in the elevator in the video data, and determine whether the volume of the items meets the preset small volume items. If so, the third condition for reducing the light curtain range is met.

[0084] Small-volume items can be 0.02-0.05 cubic meters.

[0085] 4) If any one of the above conditions for reducing the light curtain range is met, namely, condition one, condition two, or condition three, the light curtain monitoring range will be adjusted based on the preset rule for reducing the number of light curtain groups.

[0086] With the above settings, considering the number of people in the elevator, their positions, and the size of their belongings, if there are few people, those standing far from the elevator door, and those carrying small items, and given that people usually enter and exit the elevator smoothly and quickly during low-traffic periods, as the elevator door is designed to remain open for a certain duration, the opening time is generally sufficient for people to enter and exit. Only when the elevator is crowded, people are standing at the elevator door, or they are carrying large items that make it difficult to enter and exit, causing the opening time to expire before all people have entered and exited, will the light curtain be triggered. Therefore, under the above conditions, the range of the light curtain can be appropriately reduced to lower energy consumption.

[0087] In another embodiment of this application, control logic is established, which includes:

[0088] The central control center is configured as follows:

[0089] If any controller feedback is received indicating that the elevator door is not closed properly, the video data from the corresponding elevator camera is retrieved, and the actual opening and closing status of the elevator door in the video data is identified and analyzed.

[0090] Example: The elevator door remains open for 10 seconds. After 10 seconds, the elevator door is ready to close. If the light sensor module is triggered, the elevator door will continue to open for another 10 seconds. If the elevator door still cannot close after 10 seconds, it is considered that the elevator door has not closed properly.

[0091] If the analysis result indicates that the elevator door is blocked and closed, for example, by a person's hand, leg, or other object, then the timer will start from the moment the analysis result is generated and the duration of obstruction will be accumulated.

[0092] If the duration of obstruction exceeds the preset temporary obstruction duration, for example, 20 seconds, a switching contact sensing process control command is sent to the controller.

[0093] With the above settings, if the elevator door is abnormally blocked for an extended period of time, in order to save energy, it is not necessary to continuously detect obstacles through the light sensor module. Instead, it can switch to contact sensing to detect obstacles and control the opening and closing of the elevator door through the contact sensor signal, thereby reducing energy consumption.

[0094] Regarding the controller configuration:

[0095] If a control command to switch to contact-type sensing is received from the central control center, the system will power on the contact modules pre-installed on both sides of the elevator door, and control the elevator control system to respond and control the opening and closing of the light sensor module based on the detection signals fed back by the contact modules.

[0096] The above-mentioned control of the elevator control system based on the detection signal fed back by the contact module and control of the opening and closing of the photosensitive module includes:

[0097] If the detection signal fed back by the contact module indicates that there is contact, such as a person's hand, leg or other object touching the contact module, the light sensor module will be turned off, and the elevator control system will control the elevator door to remain open or reopen.

[0098] If the detection signal fed back by the contact module indicates that there is no contact (the person removes the object or body part blocking the elevator door from the contact module), the light sensor module is activated to prevent the elevator door from closing and causing injury when the person enters or exits the elevator.

[0099] If the signal from the light sensor module indicates that there is an obstruction, the elevator control system will control the elevator door to remain open or reopen.

[0100] If the signal from the light sensor module indicates that there is no obstruction, the elevator control system will close the elevator door.

[0101] The specific implementation of the contact module will be described in detail in the following embodiments. In this method, the contact module can be a device that can trigger a contact signal by physical contact with a human body part or other object.

[0102] With the above settings, when an obstruction triggers the contact module's sensor, the elevator door is opened and remains open. At this time, there is no need to activate the light curtain. The elevator door is controlled to open and close based on the detection signal fed back by the contact module. When the obstruction is removed and separated from the contact module, the light curtain is activated to prevent people from getting pinched when entering or exiting the elevator after the obstruction is removed. Then, the elevator door is controlled to open and close based on the detection signal from the light sensor module, thereby effectively reducing energy consumption.

[0103] In another embodiment of this application, since the elevator door itself is designed to remain open for a certain period of time, in order to further reduce energy consumption, the light sensor module does not need to be turned on during the time the elevator door remains open. The light sensor module is only turned on when it is needed. Therefore, the controller is further configured as follows:

[0104] Define the time when the elevator door is about to close as s1 and the time when the elevator door is completely closed as s2; where s1 and s2 increase sequentially in time.

[0105] If the current time is s1, then control the light sensor module to turn on;

[0106] If the current time is s2, then the light sensor module is turned off.

[0107] With the above settings, the light sensor module is turned on when the elevator door is about to close, and then turned off when the elevator door is completely closed. The light sensor module remains off until the next time the elevator door is about to close, and then it is turned on again, and so on.

[0108] In another embodiment of this application, in order to reduce the overall energy consumption of the elevator and optimize scheduling, the central control center is configured as follows:

[0109] If a user triggers a preset call to go up / down on a certain floor, the system obtains the operating status of each elevator and the floor selection command triggered by the user inside the car, such as the target floor triggered by the user inside the car; wherein, the operating status includes position, direction and load;

[0110] Based on the operating status of each elevator, floor selection instructions, and up / down requests, the system analyzes and selects the matching path (shortest travel distance or fewest start / stop times) according to the preset priority principle, and controls the corresponding elevator to respond based on the analysis results.

[0111] Example: Suppose there are three elevators, A, B, and C, in operation. If a passenger enters elevator A on the 2nd floor and presses the button for the target floor, 5th floor, elevator B is currently on the 7th floor, and elevator C is on the 1st floor. If a passenger presses the call button for going up on the 3rd floor, elevator C needs to travel 2 floors to go up to the 3rd floor, and elevator B needs to travel 4 floors to go down to the 3rd floor. Since elevator A is going up and will pass by the 3rd floor along the way, elevator A will be dispatched to respond to the call request for going up on the 3rd floor.

[0112] By setting up the above system, the optimal elevator is allocated based on the elevator status (position, direction, load) and request characteristics, thereby reducing the total travel distance of the elevators and lowering overall energy consumption.

[0113] This application also discloses a low-power wireless communication light curtain.

[0114] Reference Figure 2 and Figure 3 The low-power wireless communication light curtain includes a light sensing module, a wireless communication module, a contact module, and a controller. The light sensing module and the contact module are electrically connected to the controller. The controller data is connected to the wireless communication module. The controller data is connected to a preset central control center that controls the operation of multiple elevators. The central control center data is connected to a preset camera inside the elevator. The controller is electrically connected to the preset elevator control system. Based on the detection signal fed back by the light sensing module, the controller controls the elevator control system to respond.

[0115] The light sensor module includes multiple sets of transmitters and receivers. The transmitter in each set is installed on the side of one elevator door, and the corresponding receiver in the same set is installed on the side of another elevator door. The multiple sets are fixedly installed in an array along the longitudinal direction of the elevator doors.

[0116] The central control center is configured as follows:

[0117] Get the current time;

[0118] If the current time falls within a preset low-traffic period, then acquire video data from the camera.

[0119] Based on the video data, the system identifies and analyzes the number of people, their positions, and the items they are carrying inside the elevator. It then adjusts the monitoring range of the light curtain based on the identification results and sends control commands to the corresponding controller to adjust the light curtain.

[0120] The controller is configured to: if a light curtain adjustment control command is received, control the opening and closing of the corresponding number of transmitters; acquire the monitoring signal fed back by the receiver, and control the elevator control system to respond according to the monitoring signal.

[0121] Reference Figure 2 and Figure 3The contact module is installed on both sides of the elevator door and is located on the side of the light sensor module closer to the inside of the elevator. The contact module includes a contact plate, a guide rod, and a contact sensing module.

[0122] To facilitate the installation of the contact plate on the side of the elevator door without affecting the normal closing of the elevator doors on both sides, a groove is provided on the side of the elevator door to accommodate the contact plate. The contact plate is set in the groove, with one side of the contact plate extending into the groove and fixedly connected to a spring. The end of the spring is connected to a fixing block, which contacts the inner wall of the groove.

[0123] With the above settings, when the spring is in its natural state, the contact surface of the contact plate for the user to contact extends out of the side surface of the elevator door, so that when a person or object blocks the elevator door, it will contact the contact plate, allowing the contact plate to move toward the inside of the groove.

[0124] It should be noted that in order to prevent the contact plate from being triggered when the elevator door is opening and closing normally, there is a door edge extending downwards from the upper part of the elevator door on the outside of the contact surface of the contact plate. This ensures that when the elevator doors on both sides are closed, the two door edges contact each other, preventing the two contact plates from contacting each other.

[0125] In order to better guide the movement of the contact plate, one end of the guide rod is fixedly connected to the inner wall of the groove, the contact plate is provided with a guide hole for the guide rod to pass through, and the other end of the guide rod slides through the guide hole.

[0126] Reference Figure 3 and Figure 4 The contact sensing module includes a movable contact, a fixed contact, and a control circuit. The control circuit is electrically connected to the fixed contact and the controller respectively. The movable contact is embedded in the upper part of the contact surface of the contact plate. The fixed contact is installed on the side of the door edge at the top of the elevator door facing the contact plate. When the spring is in its natural state, the movable contact and the fixed contact abut against each other, so that the control circuit is turned on and sends a signal to the controller.

[0127] To prevent foreign objects, such as stones, cards, or mobile phone charms, from falling into the groove and getting stuck between the contact plate and the groove when the user pushes the contact plate, thus hindering its reset, an upward-sloping guide surface is provided at the bottom of the groove on the elevator door. An inclined surface matching the guide surface is provided at the lower end of the contact plate. Therefore, even if a small object falls onto the guide surface when the user pushes the contact plate inward, the spring will cause the contact plate to move outward and reset when the user removes the force applied to it, thus pushing the small object upward from the guide surface and preventing foreign objects from obstructing the movement of the contact plate.

[0128] Because of the guide surface, the contact plate will have a vertical displacement during the lateral movement. Therefore, the guide hole is made into a vertical strip hole structure, which will not hinder the longitudinal displacement of the contact plate.

[0129] In another embodiment, in order to enable the contact sensing module on the contact plate to sense more effectively and stably, a movable contact can be installed at the lower end of the contact plate and near the edge of the elevator door, based on the above. The fixed contact is installed on the guide surface near the edge of the elevator door. When the spring is in its natural state, the movable contacts at the upper and lower ends of the contact plate abut against their respective fixed contacts.

[0130] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An energy-saving control method for elevator light curtains, characterized in that, include: Step 1: Establish an energy-saving control environment, which includes: The camera's coverage area extends inside the elevator. The light sensor module includes multiple transmitters and receivers, which are installed on both sides of the elevator door to detect whether there are obstacles in the elevator door area. The controller is electrically connected to the elevator control system and the light sensor module. It is used to control the monitoring range of the light sensor module, receive the signals fed back by the light sensor module and respond to the elevator control system. It is used to control the elevator door to remain open or reopen. The central control center is wirelessly connected to the controllers of each elevator and the cameras inside each elevator, and is used to regulate the operating status of each elevator. Step 2: Establish the control logic, which includes: The central control center is configured as follows: Get the current time; If the current time falls within a preset low-traffic period, then acquire video data from the camera. Based on video data, the system identifies and analyzes the number of people, their positions, and the items they are carrying inside the elevator. It then adjusts the monitoring range of the light curtain based on the identification results and sends light curtain adjustment control commands to the corresponding controller. The controller is configured as follows: If a light curtain adjustment control command is received, the corresponding number of transmitters will be turned on or off. The system acquires the monitoring signals fed back from the receiving end and controls the elevator control system to respond based on the monitoring signals.

2. The elevator light curtain energy-saving control method according to claim 1, characterized in that, The process of identifying and analyzing the number of people, their positions, and the items they are carrying in the elevator based on video data, and adjusting the monitoring range of the light curtain based on the identification results, includes: The number of people in the elevator is identified in the video data, and it is determined whether the number of people meets the preset low flow rate. If so, the first condition for reducing the light curtain range is met. The positions of people inside the elevator in the video data are identified, and it is determined whether the positions of people conform to the preset area away from the elevator door. If so, the second condition for reducing the range of the light curtain is met. The volume of items carried by people in the elevator in the video data is identified, and it is determined whether the volume of the items meets the preset small volume items. If so, the third condition for reducing the range of the light curtain is met. If any one of the above conditions for reducing the light curtain range (condition 1, condition 2, or condition 3) is met, the light curtain monitoring range will be adjusted based on the preset rule for reducing the number of light curtain groups.

3. The elevator light curtain energy-saving control method according to claim 1, characterized in that, The establishment of control logic includes: The central control center is configured as follows: If any controller feedback is received indicating that the elevator door is not closed properly, the video data from the corresponding elevator camera is retrieved, and the actual opening and closing status of the elevator door in the video data is identified and analyzed. If the analysis result indicates that the elevator door is blocked and closed, then the timer will start from the moment the analysis result is generated and the duration of obstruction will be accumulated. If the duration of obstruction exceeds the preset temporary obstruction duration, a switching contact sensing process control command is sent to the controller. The controller is configured as follows: If a control command to switch to contact-type sensing is received from the central control center, the system will power on the contact modules pre-installed on both sides of the elevator door, and control the elevator control system to respond and control the opening and closing of the light sensor module based on the detection signals fed back by the contact modules.

4. The elevator light curtain energy-saving control method according to claim 3, characterized in that: The step of controlling the elevator control system to respond to and control the opening and closing of the light sensor module based on the detection signal fed back by the contact module includes: If the detection signal fed back by the contact module indicates that there is contact, the light sensor module is turned off, and the elevator control system is instructed to keep the elevator door open or reopen it. If the detection signal fed back by the contact module indicates that there is no contact, then the photosensitive module is turned on. If the signal from the light sensor module indicates that there is an obstruction, the elevator control system will control the elevator door to remain open or reopen. If the signal from the light sensor module indicates that there is no obstruction, the elevator control system will close the elevator door.

5. The elevator light curtain energy-saving control method according to claim 4, characterized in that: The controller is also configured to: Define the time when the elevator door is about to close as s1 and the time when the elevator door is completely closed as s2; where s1 and s2 increase sequentially in time. If the current time is s1, then control the light sensor module to turn on; If the current time is s2, then the light sensor module is turned off.

6. The elevator light curtain energy-saving control method according to claim 1, characterized in that: The central control center is configured as follows: If a user triggers a pre-set call for up / down on a certain floor, the system obtains the operating status of each elevator and the floor selection command triggered by the user inside the car; wherein, the operating status includes position, direction and load; Based on the operating status of each elevator, floor selection instructions, and up / down requests, the system analyzes and selects a matching path according to a preset priority principle, and controls the corresponding elevator to respond based on the analysis results.

7. A low-power wireless communication light curtain, characterized in that: The system includes a light sensing module, a wireless communication module, and a controller. The light sensing module is electrically connected to the controller, the controller is data-connected to the wireless communication module, the controller is electrically connected to the elevator's preset elevator control system, the controller is data-connected to a preset central control center that controls the operation of multiple elevators, and the central control center is data-connected to a preset camera inside the elevator. The light sensing module includes multiple arrays set at the transmitting and receiving ends of the elevator door. The central control center is configured as follows: Get the current time; If the current time falls within a preset low-traffic period, then acquire video data from the camera. Based on video data, the system identifies and analyzes the number of people, their positions, and the items they are carrying inside the elevator. It then adjusts the monitoring range of the light curtain based on the identification results and sends light curtain adjustment control commands to the corresponding controller. The controller is configured to: if a light curtain adjustment control command is received, control the opening and closing of the corresponding number of transmitters; acquire the monitoring signal fed back by the receiver, and control the elevator control system to respond according to the monitoring signal.

8. The low-power wireless communication light curtain according to claim 7, characterized in that: The controller is electrically connected to a contact module, which is installed on both sides of the elevator door. The contact module includes a contact plate, a guide rod, and a contact sensing module. One side of the contact plate has a spring that extends into a pre-drilled groove on the side of the elevator door and is fixedly connected thereto. The end of the spring abuts against the inner wall of the groove. The other side of the contact plate extends out of the groove. One end of the guide rod is fixedly connected to the inner wall of the groove, and the other end slides through the extension part of the contact plate. The contact sensing module includes a movable contact, a fixed contact, and a control circuit. The control circuit is electrically connected to the fixed contact and the controller. The movable contact is located on the contact plate, and the fixed contact is fixedly connected to the door edge of the elevator door where it can contact or separate from the contact plate.

9. The low-power wireless communication light curtain according to claim 8, characterized in that: The elevator door has an upwardly inclined guide surface at the bottom of the groove, and the lower end of the contact plate has an inclined surface that matches the guide surface.

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